HIV Transmission - Blood transfusion

HIV, along with other blood-borne viruses, can be passed on during a blood transfusion, which is usually done after an accident or when someone is in surgery. Blood services in the UK now carry out stringent tests on any blood to be used in medical procedures and, for this reason, there have been no examples of HIV being transmitted in this way since 2005. The NHS estimates the risk as being one in 6.5 million. Obviously, the risk may be higher in other countries with less stringent testing procedures or less advanced health services.